A sample implementation of redis server which supports more than 100 concurrent clients using epoll.

Only a subset of commands are supported now. List of supported commands are

1. ZADD.
2. ZRANGE.
3. ZCARD.
4. ZCOUNT.
5. SET.
6. GET.
7. SETBIT.
8. GETBIT.
9. SAVE.

Data structure used are

1. Variation of avl-tree.
2. Doubly-linked-list.
3. Skip-list.
4. BitArray.

All the above are implemented in the same node will host the data for the commands ZADD, ZRANGE, ZCARD, ZCOUNT. BitArray is used to host the data for SET,GET,SETBIT, GETBIT